342047989 has 4 divisors (see below), whose sum is σ = 342122656. Its totient is φ = 341973324.

The previous prime is 342047983. The next prime is 342048001. The reversal of 342047989 is 989740243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 342047989 - 2⁹ = 342047477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342047983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29979 + ... + 39784.

It is an arithmetic number, because the mean of its divisors is an integer number (85530664).

Almost surely, 2^342047989 is an apocalyptic number.

It is an amenable number.

342047989 is a deficient number, since it is larger than the sum of its proper divisors (74667).

342047989 is an equidigital number, since it uses as much as digits as its factorization.

342047989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74666.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 342047989 is about 18494.5394373583. The cubic root of 342047989 is about 699.3517733722.

The spelling of 342047989 in words is "three hundred forty-two million, forty-seven thousand, nine hundred eighty-nine".